For sites with large faceted navigation, nofollow can sometimes be an effective tool to prevent Google from wasting crawl budget. Until Google starts treating nofollow as a crawl "hint," it's too early to tell whether publishers using nofollow in this way will need to make changes, but it may be important to be aware of.
To clarify, if a site is using nofollow correctly today, SEOs do not need to make changes. Although sites are free to do so, they should not expect to improve rankings by doing so, nor should they receive new penalties for not changing.
Still, Google’s use of these new link attributes is likely to evolve over portugal mobile database time, and it will be interesting to see, through research and analysis, whether using the nofollow attribute in certain ways in the future does in fact yield ranking benefits.
Which link attribute should be used?
If you choose to change your nofollow links to be more specific, Google’s guidelines are pretty clear, so we won’t repeat them in depth here. In short, your options are:
rel="sponsored" : Used for paid or sponsored links. This may include affiliate links, although Google doesn’t explicitly say so.
rel="ugc" : Links in all user-generated content. Google says this may not be necessary if the UGC is created by trusted contributors.
rel="nofollow" : A collection of all nofollow links. As with other nofollow directives, these links will generally not be used for ranking, crawling, or indexing purposes.